As an aside whilst it is quite correct to say that this dispute has its origins with the European Court of Human Rights, anyone who believes that our membership of the EU and our compliance with ECHR decisions are unconnected is deluded.
Whilst it is certainly true that these two esteemed organisations had different origins, for different purposes at different times, the two are now inextricably linked. The Convention was drafted by the Council of Europe and all Council members are party to it and are bound by it (and so by definition are bound by the decisions of the Court). All EU members are also members of the Council of Europe and it is most unlikely that any nation that was not a member would be allowed to join the EU and even more unlikely that any member State of the EU which withdrew from the Council of Europe would be permitted to remain an EU member.
As if this was not enough, following on from a clause in the Treaty of Lisbon, in 2010 the EU itself acceded to the Convention so binding all member states to it and to decisions of the Court:
http://hub.coe.int/what-we-do/human-rights/eu-accession-to-the-convention
So whilst we watch the Prime Minister beat his chest and threaten to do all manner of things which will disentangle us from the ECHR, unless he is also considering the UK’s withdrawal from the EU (which is about as likely as me winning the Men’s Downhill at the forthcoming Winter Olympics) he might as well tell us he is abolishing Income Tax.
So please, let's hear no more talk of the European Court of Human Rights and the EU being separate entities. They are peas of a pod and both have the sole aim of subjugation individual nation states, their democracy and legislature.
On the particular question raised by TTT, sentencing somebody to a sentence from which they have no relaistic chance of release will incur the same wrath of the ECHR as have "whole life" sentences and playing with the semantics of the wording will not alter that. The UK cannot decide these matters any longer.